Autofluorescence imaging endoscopy can distinguish non-erosive reflux disease from functional heartburn: A pilot study

Table 1 Demographics and clinical features

Characteristic	Patients (n = 84)
Mean age (yr)	49.0 ± 12.6
Gender (male:female)	39:45
BMI (kg/m2)	24.1 ± 3.7

Data are expressed as mean ± SD. BMI: Body mass index.

Table 2 Results of autofluorescence imaging endoscopy in the differential diagnosis between non-erosive reflux disease and functional heartburn

AFI	NERD	FH	Total
Positive	67	1	68
Negative	7	9	16
Total	74	10	84

McNemar test, P = 0.07. AFI: Autofluorescence imaging; NERD: Non-erosive reflux disease; FH: Functional heartburn.